Currency Pair

The two currencies that make up an exchange rate. When one is bought, the other is sold, and vice versa.

Base Currency

The first currency in the pair. Also the currency your account is denominated in.

Counter Currency

The second currency in the pair. Also known as the terms currency.

ISO Currency Codes

USD = US Dollar
EUR = Euro
JPY = Japanese Yen
GBP = British Pound
CHF = Swiss Franc
CAD = Canadian Dollar
AUD = Australian Dollar
NZD = New Zealand Dollar

Currency Pair Terminology

EUR/USD = "Euro"
USD/JPY = "Dollar Yen"
GBP/USD = "Cable" or "Sterling"
USD/CHF = "Swissy"
USD/CAD = "Dollar Canada" (CAD referred to as the "Loonie")
AUD/USD = "Aussie Dollar"
NZD/USD = "Kiwi"

FCM

Futures Commission Merchant. An individual or organisation licensed by the U.S. Commodities Futures Trading Commission (CFTC) to deal in futures products and accept monies from clients to trade them.

Dealing Desk

A dealing desk provides pricing, liquidity and execution of trades.

Market Maker

A market maker provides pricing and liquidity for a particular currency pair and stands ready to buy or sell that currency at the quoted price. A market maker takes the opposite side of your trade and has the option of either holding that position or partially or fully offsetting it with other market participants, managing their aggregate exposure to their clients. If a market maker chooses to keep the trader's position without offsetting it in the market, the trader's profit is the market maker's loss and vice versa, leading to a possible conflict of interest between the trader and his market maker. A market maker earns their commission from the spread between the bid and offer price.

NDD

An acronym for 'No Dealing Desk'. A no-dealing desk broker does not have a dealing desk but instead uses external liquidity providers to provide pricing and liquidity for its clients. The liquidity providers send in competing bids and offers into the platform, resulting in the best bid and offer being displayed to the client. Some no-dealing desk brokers may display the market depth which is the amount of liquidity available at each price. A greater number of liquidity providers providing pricing to the no-dealing desk broker leads to tighter spreads. A no-dealing desk broker may increase the spread to earn its commission.